Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b96eec714a8a50a…

MALICIOUS

PDF

39.9 KB Created: 2020-08-22 15:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58bcfb3783cc0ca5e1f818207444e14d SHA-1: 1335eab4e776a5c84bf29dece1c5ecdb8cfb26f9 SHA-256: 7b96eec714a8a50a208eb6b43927e857a15cb22bf6d0daaab175f3b5953ab571
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a primary redirector URL pointing to a known malicious domain. The document body, though heavily obfuscated, contains references to 'Alison krauss sheet music free' and the malicious URL, suggesting a lure to disguise the malicious intent. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to malicious infrastructure, likely intended to lead to a phishing page or malware download.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=alison+krauss+sheet+music+free
    • http://files.thelemondropshoppe.ca/uploads/1/3/1/3/131398251/4545912.pdf
    • http://velopoxan.ivoryemily.com/uploads/1/3/0/8/130813453/pijokidasesowojam.pdf
    • http://detufole.capedingo.com.au/uploads/1/3/2/3/132303382/jibiverisaxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/85334968681.pdf
    • https://cdn.shopify.com/s/files/1/0435/8501/1871/files/cmc_rope_rescue_manual_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/jipiva.pdf
    • https://cdn.shopify.com/s/files/1/0429/5013/1878/files/litejesego.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/jigukodasomajogatasanud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/66046106109.pdf
    • https://cdn.shopify.com/s/files/1/0459/7340/5863/files/romiz.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000503f.bin
6e335b5807ee0f22c694920c1e4fdbfd30ad1a40f0f9c152309ee7374e30d3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x503F 5056 bytes
font_01_sfnt_off0000613b.bin
fc50020843b981ea33ac4fe4fe49ce0d87994e6ff8b987f54589ccc80aa675ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 10420 bytes
font_02_sfnt_off000084ee.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84EE 4324 bytes

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